How large an expansion gap should be left between steel railroad rails if they may reach a maximum temperature 36.0°C greater th

Question

3 years ago

15

an when they were laid? Their original length is 26.0 m.

1 answer:

JulijaS [17] · Answer 1 · 2021-12-30T09:13:52+03:00

Answer:

11 mm

Explanation:

Original length L' = 26 m

Increase in temperature dT = 36.0°C

The gap l =?

The coefficient of linear expansion for steel & = 12 × 10^−6 per °C

The gap will be gotten from the equation of linear expansion.

l = L' x & x dT

substituting, we have

L = 26 x 12 × 10^−6 x 36

L = 0.011 m = 11 mm